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Finding the Fourth Proportional to 77,632.81, 107,126.21 and 44,921.57

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Solution

The fourth proportional to 77,632.81, 107,126.21 and 44,921.57 is: 61,987.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,632.81 : 107,126.21 = 44,921.57 : x
  2. Step 2: Convert to fraction form
    77,632.81/107,126.21 = 44,921.57/x
  3. Step 3: Cross multiply
    77,632.81x = 107,126.21 × 44,921.57
  4. Step 4: Simplify right side
    77,632.81x = 4,812,278,097.83
  5. Step 5: Solve for x
    x = 4,812,278,097.83/77,632.81
  6. Step 6: Final answer
    x = 61,987.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.